ASTROSAT CZTI

Data Quality Report

Orbit 20161221_G06_102T01_9000000912_level2

Creation date: 2017-09-22T14:19:06.977460
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G06_102T01_9000000912cztM0_level2.evt modeM0/AS1G06_102T01_9000000912cztM0_level2_quad_clean.evt
Size (bytes)4,993,032,960693,898,560
Size4.7 GB 661.8 MB
Events in quadrant A33,503,2814,315,595
Events in quadrant B29,588,6094,368,600
Events in quadrant C26,878,2054,344,684
Events in quadrant D57,318,3053,986,924

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01399350
B01278830
C01221890
D02113480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5831616232.783113%
B5830911872.035706%
C583227331.256816%
D58320935116.033951%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 64931 58345 296 296 0.46% 0.51%
B 64931 58334 177 177 0.27% 0.30%
C 64931 58349 110 110 0.17% 0.19%
D 64931 58344 6808 6808 10.48% 11.67%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 251 5954415 4339.58 6768 6611 1370.6
A 8 15 815048 589.84 6768 6611 1370.6
A 14 111 367804 263.53 6768 6611 1370.6
B 0 228 1198961 917.88 6837 6680 1298.9
B 4 48 419342 317.69 6837 6680 1298.9
B 0 219 373359 282.29 6837 6680 1298.9
C 9 247 936157 608.89 6603 6630 1526.6
C 4 254 121171 75.03 6603 6630 1526.6
C 13 61 52659 30.15 6603 6630 1526.6
D 2 33 20064409 13371.82 6114 5918 1500.1
D 8 195 8786116 5853.25 6114 5918 1500.1
D 12 221 1582328 1050.9 6114 5918 1500.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter